REGULATIONS FOR SULPHURIC ACID ADDITIVE (MAX. 50%)
In this case it is necessary to take into account the following:
• replace the flexible cristal PVC suction hose with semi-rigid polyethylene hose.
• Remove all water present in the pump head (if water mixes with sulphuric acid a great amount of gas is
generated which will overheat the area and cause damage to the valves and pump head).
To perform this operation when the equipment is not fixed to the plant, the pump can be pulsed for seconds (15-30)
keeping it overturned and without piping connected to the fittings. If this is not possible disassemble and reassemble the
pump head (appendix 1) using the four fixing screws.
OPERATING INSTRUCTIONS
Manual Pump
Manual flow rate adjustment using a potentiometer to intervene on the injection frequency. Possibility of a more accurate
flow control at low frequencies using the two buttons 20% and 100%.
Commands
Fig.8 - Commands panel
1 Adjustment knob frequency (%) of the number of injections
2 START/STOP button
3 Button function selection: full scale 20/100% / entrance 1:1; activation and deactivation function UNDER-
LOAD / OVER-LOAD held down for 5 sec.
4 1:1 function display external signal “green” LED
5 100% flow scale read out “green” LED
6 20% flow scale read out “green” LED
7 UNDERLOAD mode alarm (green LED), OVERLOAD mode alarm (red LED)
8 STAND BY mode (green LED flashing), operation mode (red LED flashing)
Commands description
a) START/STOP button controls the activation and deactivation of the pump. Under stand-by mode (STOP) the green LED
(8) flashing at long intervals;
b) LED (8) signals the injections of the pump, “red” LED flashing, the pump operates;
c) FLOW RATE ADJUSTMENT (knob 1) adjust the injection/minute of the pump until 100% of the maximum flow rate;
d) FLOW RATE SCALE READ OUT;
e) ALARM LEVEL: the pump is predisposed for level alarm (see section), the level alarm, the pump stop dosing and the
LED (8) lights up red color;
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